Lenovo X4 Bone Conduction Headphones Wireless Bluetooth 5.0 Earphone Outdoor Sports Headset Waterproof Hands-free with Microphone Black

OverviewOverview: True bone conduction headphone releases your ears, providing you a healthy and safe way to listen to music. Using innovative bone conduction technology, the headphone conducts the sound through the bone. It transmits sound to the bone near the external canal, then to the auditory nerve. Effectively avoids the occurrence of ear damage and hearing loss, giving your healthy listening. Features: Bone Conduction Design: The sound transmits through the bone to the auditory nerve, no need to put into the ear canal, no eardrum damage, good for the user to avoid ear disease and hearing losing. Ear-free Keeping Danger Away: Release your ears to listen to the world, you can respond to the surrounding situation quickly, far away from danger, suitable for outdoor activities. Born for Sports: IP56 waterproof, no need to worry about sweat and splashing water. Ergonomic and 25g lightweight design ensures wearing comfort and stability, suitable for hiking, running, cycling, climbing, driving, etc. BT 5.0 Connection: BT 5.0 technology enables stable connection, fast transmission speed and low power consumption. Free to enjoy hands-free calls or BT music via BT connection. Long Battery Life: 150mAh rechargeable lithium battery provides about 8 hours of playback time on one full charge. And can be recharged via the included charging cable. Specifications: Brand Name: Lenovo Model Number: X4 BT Version: 5.0 BT Profile: A2DP, HFP, HSP, AVRCP Operation range: Up to 10 meters (no obstacle) Frequency Range: 10-2000Hz Sensitivity: 36dB Impedance: 20Ω Battery Capacity: 150mAh Music Playing Time: about 8 hours (depends on music volume) Charging Time: about 2 hours Color: Black Item Weight: 25g/0.88oz Package Size: 16.1*13*6cm/6.33*5.12*2.36in Package Weight: 228g/8.04oz Package List:    1 * Bone Conduction Headphone 1 * USB Charging Cable 1 * User Manual